Colorado air quality today
Today's readings across Colorado: Denver has the highest reading at Good, and 68 of 68 tracked cities rate Good. Click any city for the pollutants behind its number and what they mean for time outside.
Cities in Colorado
| City | Air quality today | EPA level |
|---|---|---|
| Denver Air Quality | Goodas of Jul 28 | 1 of 6 |
| Colorado Springs Air Quality | Goodas of Jul 28 | 1 of 6 |
| Aurora Air Quality | Goodas of Jul 28 | 1 of 6 |
| Greeley Air Quality | Goodas of Jul 28 | 1 of 6 |
| Grand Junction Air Quality | Goodas of Jul 28 | 1 of 6 |
| Arvada Air Quality | Goodas of Jul 28 | 1 of 6 |
| Boulder Air Quality | Goodas of Jul 28 | 1 of 6 |
| Pueblo Air Quality | Goodas of Jul 28 | 1 of 6 |
| Westminster Air Quality | Goodas of Jul 28 | 1 of 6 |
| Loveland Air Quality | Goodas of Jul 28 | 1 of 6 |
| Castle Rock Air Quality | Goodas of Jul 28 | 1 of 6 |
| Parker Air Quality | Goodas of Jul 28 | 1 of 6 |
| Littleton Air Quality | Goodas of Jul 28 | 1 of 6 |
| Security-Widefield Air Quality | Goodas of Jul 28 | 1 of 6 |
| Pueblo West Air Quality | Goodas of Jul 28 | 1 of 6 |
| Englewood Air Quality | Goodas of Jul 28 | 1 of 6 |
| Wheat Ridge Air Quality | Goodas of Jul 28 | 1 of 6 |
| Erie Air Quality | Goodas of Jul 28 | 1 of 6 |
| Columbine Air Quality | Goodas of Jul 28 | 1 of 6 |
| Evans Air Quality | Goodas of Jul 28 | 1 of 6 |
| Louisville Air Quality | Goodas of Jul 28 | 1 of 6 |
| Golden Air Quality | Goodas of Jul 28 | 1 of 6 |
| Durango Air Quality | Goodas of Jul 28 | 1 of 6 |
| Cimarron Hills Air Quality | Goodas of Jul 28 | 1 of 6 |
| Johnstown Air Quality | Goodas of Jul 28 | 1 of 6 |
| Welby Air Quality | Goodas of Jul 28 | 1 of 6 |
| Frederick Air Quality | Goodas of Jul 28 | 1 of 6 |
| Greenwood Village Air Quality | Goodas of Jul 28 | 1 of 6 |
| Fruita Air Quality | Goodas of Jul 28 | 1 of 6 |
| Steamboat Springs Air Quality | Goodas of Jul 28 | 1 of 6 |
| Berthoud Air Quality | Goodas of Jul 28 | 1 of 6 |
| Wellington Air Quality | Goodas of Jul 28 | 1 of 6 |
| Fort Morgan Air Quality | Goodas of Jul 28 | 1 of 6 |
| Cherry Hills Village Air Quality | Goodas of Jul 28 | 1 of 6 |
| Trinidad Air Quality | Goodas of Jul 28 | 1 of 6 |
| Hartsel Air Quality | Goodas of Jul 28 | 1 of 6 |
| Elbert Air Quality | Goodas of Jul 28 | 1 of 6 |
| Cortez Air Quality | Goodas of Jul 28 | 1 of 6 |
| Westcliffe Air Quality | Goodas of Jul 28 | 1 of 6 |
| Pagosa Springs Air Quality | Goodas of Jul 28 | 1 of 6 |
| Vail Air Quality | Goodas of Jul 28 | 1 of 6 |
| Palmer Lake Air Quality | Goodas of Jul 28 | 1 of 6 |
| Gypsum Air Quality | Goodas of Jul 28 | 1 of 6 |
| Boyero Air Quality | Goodas of Jul 28 | 1 of 6 |
| Aspen Air Quality | Goodas of Jul 28 | 1 of 6 |
| Glenwood Springs Air Quality | Goodas of Jul 28 | 1 of 6 |
| Peyton Air Quality | Goodas of Jul 28 | 1 of 6 |
| Telluride Air Quality | Goodas of Jul 28 | 1 of 6 |
| Winter Park Air Quality | Goodas of Jul 28 | 1 of 6 |
| Franktown Air Quality | Goodas of Jul 28 | 1 of 6 |
| Starkville Air Quality | Goodas of Jul 28 | 1 of 6 |
| Buena Vista Air Quality | Goodas of Jul 28 | 1 of 6 |
| Carbondale Air Quality | Goodas of Jul 28 | 1 of 6 |
| Salt Creek Air Quality | Goodas of Jul 28 | 1 of 6 |
| Manitou Springs Air Quality | Goodas of Jul 28 | 1 of 6 |
| Breckenridge Air Quality | Goodas of Jul 28 | 1 of 6 |
| Woodland Park Air Quality | Goodas of Jul 28 | 1 of 6 |
| Basalt Air Quality | Goodas of Jul 28 | 1 of 6 |
| Mancos Air Quality | Goodas of Jul 28 | 1 of 6 |
| Evergreen Air Quality | Goodas of Jul 28 | 1 of 6 |
| Nucla Air Quality | Goodas of Jul 28 | 1 of 6 |
| Frisco Air Quality | Goodas of Jul 28 | 1 of 6 |
| Idaho Springs Air Quality | Goodas of Jul 28 | 1 of 6 |
| Silverthorne Air Quality | Goodas of Jul 28 | 1 of 6 |
| Elizabeth Air Quality | Goodas of Jul 28 | 1 of 6 |
| Monte Vista Air Quality | Goodas of Jul 28 | 1 of 6 |
| Timnath Air Quality | Goodas of Jul 28 | 1 of 6 |
| Avon Air Quality | Goodas of Jul 28 | 1 of 6 |
| Fort Collins Air Quality | No live reading | Not available |
| Lakewood Air Quality | No live reading | Not available |
| Thornton Air Quality | No live reading | Not available |
| Centennial Air Quality | No live reading | Not available |
| Lafayette Air Quality | No live reading | Not available |
| Longmont Air Quality | No live reading | Not available |
| Highlands Ranch Air Quality | No live reading | Not available |
| Broomfield Air Quality | No live reading | Not available |
| Commerce City Air Quality | No live reading | Not available |
| Brighton Air Quality | No live reading | Not available |
| Northglenn Air Quality | No live reading | Not available |
| Windsor Air Quality | No live reading | Not available |
| Dakota Ridge Air Quality | No live reading | Not available |
| Ken Caryl Air Quality | No live reading | Not available |
| Fountain Air Quality | No live reading | Not available |
| Four Square Mile Air Quality | No live reading | Not available |
| Montrose Air Quality | No live reading | Not available |
| Clifton Air Quality | No live reading | Not available |
| Sherrelwood Air Quality | No live reading | Not available |
| Fort Carson Air Quality | No live reading | Not available |
| Firestone Air Quality | No live reading | Not available |
| Canon City Air Quality | No live reading | Not available |
| Black Forest Air Quality | No live reading | Not available |
| Federal Heights Air Quality | No live reading | Not available |
| Lone Tree Air Quality | No live reading | Not available |
| Sterling Air Quality | No live reading | Not available |
| Superior Air Quality | No live reading | Not available |
| Castle Pines Air Quality | No live reading | Not available |
| The Pinery Air Quality | No live reading | Not available |
| Burns Air Quality | No live reading | Not available |
| Rockvale Air Quality | No live reading | Not available |
| Monument Air Quality | No live reading | Not available |
| Silt Air Quality | No live reading | Not available |
| Falcon Air Quality | No live reading | Not available |
| Wiggins Air Quality | No live reading | Not available |
| Salida Air Quality | No live reading | Not available |
| Ovid Air Quality | No live reading | Not available |
| Dolores Air Quality | No live reading | Not available |
| Mead Air Quality | No live reading | Not available |
| Fowler Air Quality | No live reading | Not available |
| Eaton Air Quality | No live reading | Not available |
| Cedaredge Air Quality | No live reading | Not available |
| Craig Air Quality | No live reading | Not available |
| Fairplay Air Quality | No live reading | Not available |
| Walden Air Quality | No live reading | Not available |
| Cahone Air Quality | No live reading | Not available |
| Conifer Air Quality | No live reading | Not available |
| Paonia Air Quality | No live reading | Not available |
| Larkspur Air Quality | No live reading | Not available |
| Estes Park Air Quality | No live reading | Not available |
| Hotchkiss Air Quality | No live reading | Not available |
| Delta Air Quality | No live reading | Not available |
Readings use the EPA's six-level scale, from Good (1) to Hazardous (6), and update daily. Cities without a reading refresh the next time their page loads.
How to read these numbers
The air quality index tracks pollution: ozone, fine particles (PM2.5), dust, and exhaust. Good and Moderate days are fine for almost everyone. At Unhealthy for Sensitive Groups, people with asthma or a heart condition feel it first. Unhealthy and above means everyone should cut back time outside.
Pollen is not part of this score. A Good air day in Colorado can still be a rough allergy day, so check Colorado pollen levels too before you plan a long day outside.